summaryrefslogtreecommitdiffstats
path: root/ncurses-5.3/ncurses/tinfo/lib_termcap.c
diff options
context:
space:
mode:
Diffstat (limited to 'ncurses-5.3/ncurses/tinfo/lib_termcap.c')
-rw-r--r--ncurses-5.3/ncurses/tinfo/lib_termcap.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/tinfo/lib_termcap.c b/ncurses-5.3/ncurses/tinfo/lib_termcap.c
new file mode 100644
index 0000000..9bb0134
--- /dev/null
+++ b/ncurses-5.3/ncurses/tinfo/lib_termcap.c
@@ -0,0 +1,322 @@
+/****************************************************************************
+ * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * *
+ * some of the code in here was contributed by: *
+ * Magnus Bengtsson, d6mbeng@dtek.chalmers.se (Nov'93) *
+ ****************************************************************************/
+
+#define __INTERNAL_CAPS_VISIBLE
+#include <curses.priv.h>
+
+#include <termcap.h>
+#include <tic.h>
+#include <ctype.h>
+
+#include <term_entry.h>
+
+MODULE_ID("$Id$")
+
+#define CSI 233
+#define ESC 033 /* ^[ */
+#define L_BRACK '['
+#define SHIFT_OUT 017 /* ^N */
+
+NCURSES_EXPORT_VAR(char *) UP = 0;
+NCURSES_EXPORT_VAR(char *) BC = 0;
+
+static char *fix_me = 0;
+
+static char *
+set_attribute_9(int flag)
+{
+ const char *result;
+
+ if ((result = tparm(set_attributes, 0, 0, 0, 0, 0, 0, 0, 0, flag)) == 0)
+ result = "";
+ return strdup(result);
+}
+
+static int
+is_csi(char *s)
+{
+ if (UChar(s[0]) == CSI)
+ return 1;
+ else if (s[0] == ESC && s[1] == L_BRACK)
+ return 2;
+ return 0;
+}
+
+static char *
+skip_zero(char *s)
+{
+ if (s[0] == '0') {
+ if (s[1] == ';')
+ s += 2;
+ else if (isalpha(UChar(s[1])))
+ s += 1;
+ }
+ return s;
+}
+
+static bool
+similar_sgr(char *a, char *b)
+{
+ int csi_a = is_csi(a);
+ int csi_b = is_csi(b);
+
+ if (csi_a != 0 && csi_b != 0 && csi_a == csi_b) {
+ a += csi_a;
+ b += csi_b;
+ if (*a != *b) {
+ a = skip_zero(a);
+ b = skip_zero(b);
+ }
+ }
+ return strcmp(a, b) == 0;
+}
+
+/***************************************************************************
+ *
+ * tgetent(bufp, term)
+ *
+ * In termcap, this function reads in the entry for terminal `term' into the
+ * buffer pointed to by bufp. It must be called before any of the functions
+ * below are called.
+ * In this terminfo emulation, tgetent() simply calls setupterm() (which
+ * does a bit more than tgetent() in termcap does), and returns its return
+ * value (1 if successful, 0 if no terminal with the given name could be
+ * found, or -1 if no terminal descriptions have been installed on the
+ * system). The bufp argument is ignored.
+ *
+ ***************************************************************************/
+
+NCURSES_EXPORT(int)
+tgetent(char *bufp GCC_UNUSED, const char *name)
+{
+ int errcode;
+
+ T((T_CALLED("tgetent()")));
+
+ setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode);
+
+ PC = 0;
+ UP = 0;
+ BC = 0;
+ fix_me = 0;
+
+ if (errcode == 1) {
+
+ if (cursor_left)
+ if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
+ backspace_if_not_bs = cursor_left;
+
+ /* we're required to export these */
+ if (pad_char != NULL)
+ PC = pad_char[0];
+ if (cursor_up != NULL)
+ UP = cursor_up;
+ if (backspace_if_not_bs != NULL)
+ BC = backspace_if_not_bs;
+
+ /*
+ * While 'sgr0' is the "same" as termcap 'me', there is a compatibility
+ * issue. The sgr/sgr0 capabilities include setting/clearing alternate
+ * character set mode. A termcap application cannot use sgr, so sgr0
+ * strings that reset alternate character set mode will be
+ * misinterpreted. Here, we remove those from the more common
+ * ISO/ANSI/VT100 entries, which have sgr0 agreeing with sgr.
+ */
+ if (exit_attribute_mode != 0
+ && set_attributes != 0) {
+ char *on = set_attribute_9(1);
+ char *off = set_attribute_9(0);
+ char *tmp;
+ size_t i, j, k;
+
+ if (similar_sgr(off, exit_attribute_mode)
+ && !similar_sgr(off, on)) {
+ TR(TRACE_DATABASE, ("adjusting sgr0 : %s", _nc_visbuf(off)));
+ FreeIfNeeded(fix_me);
+ fix_me = off;
+ for (i = 0; off[i] != '\0'; ++i) {
+ if (on[i] != off[i]) {
+ j = strlen(off);
+ k = strlen(on);
+ while (j != 0
+ && k != 0
+ && off[j - 1] == on[k - 1]) {
+ --j, --k;
+ }
+ while (off[j] != '\0') {
+ off[i++] = off[j++];
+ }
+ off[i] = '\0';
+ break;
+ }
+ }
+ /* SGR 10 would reset to normal font */
+ if ((i = is_csi(off)) != 0
+ && off[strlen(off) - 1] == 'm') {
+ tmp = skip_zero(off + i);
+ if (tmp[0] == '1'
+ && skip_zero(tmp + 1) != tmp + 1) {
+ i = tmp - off;
+ if (off[i - 1] == ';')
+ i--;
+ j = skip_zero(tmp + 1) - off;
+ while (off[j] != '\0') {
+ off[i++] = off[j++];
+ }
+ off[i] = '\0';
+ }
+ }
+ TR(TRACE_DATABASE, ("...adjusted me : %s", _nc_visbuf(fix_me)));
+ if (!strcmp(fix_me, exit_attribute_mode)) {
+ TR(TRACE_DATABASE, ("...same result, discard"));
+ free(fix_me);
+ fix_me = 0;
+ }
+ }
+ free(on);
+ }
+
+ (void) baudrate(); /* sets ospeed as a side-effect */
+
+/* LINT_PREPRO
+#if 0*/
+#include <capdefaults.c>
+/* LINT_PREPRO
+#endif*/
+
+ }
+ returnCode(errcode);
+}
+
+/***************************************************************************
+ *
+ * tgetflag(str)
+ *
+ * Look up boolean termcap capability str and return its value (TRUE=1 if
+ * present, FALSE=0 if not).
+ *
+ ***************************************************************************/
+
+NCURSES_EXPORT(int)
+tgetflag(NCURSES_CONST char *id)
+{
+ int i;
+
+ T((T_CALLED("tgetflag(%s)"), id));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_boolean(i, tp) {
+ const char *capname = ExtBoolname(tp, i, boolcodes);
+ if (!strncmp(id, capname, 2)) {
+ /* setupterm forces invalid booleans to false */
+ returnCode(tp->Booleans[i]);
+ }
+ }
+ }
+ returnCode(0); /* Solaris does this */
+}
+
+/***************************************************************************
+ *
+ * tgetnum(str)
+ *
+ * Look up numeric termcap capability str and return its value, or -1 if
+ * not given.
+ *
+ ***************************************************************************/
+
+NCURSES_EXPORT(int)
+tgetnum(NCURSES_CONST char *id)
+{
+ int i;
+
+ T((T_CALLED("tgetnum(%s)"), id));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_number(i, tp) {
+ const char *capname = ExtNumname(tp, i, numcodes);
+ if (!strncmp(id, capname, 2)) {
+ if (!VALID_NUMERIC(tp->Numbers[i]))
+ returnCode(ABSENT_NUMERIC);
+ returnCode(tp->Numbers[i]);
+ }
+ }
+ }
+ returnCode(ABSENT_NUMERIC);
+}
+
+/***************************************************************************
+ *
+ * tgetstr(str, area)
+ *
+ * Look up string termcap capability str and return a pointer to its value,
+ * or NULL if not given.
+ *
+ ***************************************************************************/
+
+NCURSES_EXPORT(char *)
+tgetstr(NCURSES_CONST char *id, char **area)
+{
+ int i;
+ char *result = NULL;
+
+ T((T_CALLED("tgetstr(%s,%p)"), id, area));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_string(i, tp) {
+ const char *capname = ExtStrname(tp, i, strcodes);
+ if (!strncmp(id, capname, 2)) {
+ result = tp->Strings[i];
+ TR(TRACE_DATABASE, ("found match : %s", _nc_visbuf(result)));
+ /* setupterm forces canceled strings to null */
+ if (VALID_STRING(result)) {
+ if (result == exit_attribute_mode
+ && fix_me != 0) {
+ result = fix_me;
+ TR(TRACE_DATABASE, ("altered to : %s", _nc_visbuf(result)));
+ }
+ if (area != 0
+ && *area != 0) {
+ (void) strcpy(*area, result);
+ *area += strlen(*area) + 1;
+ }
+ }
+ break;
+ }
+ }
+ }
+ returnPtr(result);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 21:11:02 +0000